Lactococcus lactis W58 (L. lactis W58)

Lactococcus lactis W58 is a specific probiotic strain of the Gram-positive, non-pathogenic bacterium Lactococcus lactis, which is widely utilized in both the food industry and as a live biotherapeutic agent. It is a key component of specialized multi-strain probiotic formulations, such as Ecologic Barrier and OMNi-BiOTiC PANDA, selected for its documented ability to strengthen the intestinal epithelial barrier. The strain functions by enhancing the expression and assembly of tight junction proteins, thereby reducing intestinal permeability (often referred to as "leaky gut") and preventing the systemic translocation of pro-inflammatory bacterial components like lipopolysaccharides (LPS). Clinical research has investigated L. lactis W58 for its potential to manage conditions linked to gut-derived inflammation, including migraine, depression, and metabolic disorders, by modulating the host's immune response and microbiome composition. While generally recognized as safe (GRAS), it represents a live microbial intervention rather than a traditional molecular drug target like a receptor or enzyme.

Other names

Lactococcus lactis subsp. lactis W58Streptococcus lactis W58

Enhancement of tight junction protein expression, competitive exclusion of pathogenic bacteria, and reduction of pro-inflammatory cytokine production (e.g., IL-6, TNF-alpha).